BRNC Dartmouth, late 70s or early 80s.
RM Colour Sergeant is drilling a squad of "internationals" on the parade ground and of course it's a complete shambles. Tick-tocking, out of step, turning the wrong way etc etc. Clr Sgt becoming quietly apoplectic. At the end of the detail he keeps them going for a few minutes to make them late and get the idle sods to run to their next assignment- when a WREN Officer Under Training walks by - and stops to watch, and laugh...
Clr Sgt halts his squad, turns on the unfortunate lass and in his best parade ground bellow observes, "I don't know what you're laughing at, Ma'am, you've only got one c*** to look after, I've got a whole squad of them"!
Unfortunately the Commander's window was open, and he was sitting at his desk.
The story goes that the poor old bootie was at the gate with his kitbag packed within the hour.